<form com="modul_install" action="" method="post" enctype="multipart/form-data" name="form1" id="form1">
  <p>
    <label for="file">Install Modul<br />
    </label>
    <input type="file" name="file" id="file" />
  </p>
<p>
  <input type="submit" name="button" id="button" value="Senden" />
</p>
</form>